package com.lagou.handler;

import com.lagou.pojo.RpcRequest;
import com.lagou.service.UserServiceImpl;
import com.lagou.utils.SpringContextUtil;
import io.netty.channel.ChannelHandlerContext;
import io.netty.channel.ChannelInboundHandlerAdapter;
import org.springframework.beans.BeansException;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.context.ApplicationContext;
import org.springframework.context.ApplicationContextAware;
import org.springframework.stereotype.Service;

import java.lang.reflect.Method;
import java.util.Map;


/**
 * 自定义的业务处理器
 */
public class UserServiceHandler extends ChannelInboundHandlerAdapter{

    private  RpcRequest rpcRequest;



    //当客户端读取数据时,该方法会被调用



    @Override
    public void channelRead(ChannelHandlerContext ctx, Object msg) throws Exception {

        //注意:  客户端将来发送请求的时候会传递一个参数:  UserService#sayHello#are you ok
        //1.判断当前的请求是否符合规则
        rpcRequest=(RpcRequest) msg;
//        if(msg.toString().startsWith("UserService")){
//            //2.如果符合规则,调用实现类货到一个result
//            UserServiceImpl service = new UserServiceImpl();
//            String result = service.sayHello(msg.toString().substring(msg.toString().lastIndexOf("#")+1));
//            //3.把调用实现类的方法获得的结果写到客户端
//            ctx.writeAndFlush(result);
//        }


        System.out.println(rpcRequest.getClassName()+"...."+rpcRequest.getMethodName());
        String className=rpcRequest.getClassName();
        Object o = SpringContextUtil.getBean(className.substring(className.lastIndexOf(".") + 1, className.length()));
        Method method = o.getClass().getMethod(rpcRequest.getMethodName(), rpcRequest.getParameterTypes());
        String result=(String) method.invoke(o.getClass().newInstance(),rpcRequest.getParameters());
        ctx.writeAndFlush(result);
    }

}
